Which of the Following Reactions Is an Oxidation-Reduction Reaction

question 7

Multiple Choice

Which of the following reactions is an oxidation-reduction reaction?

• A) NH₃(g) + H₂O(l) → NH₄OH(aq)
• B) HCl(aq) + NaH₂PO₄(aq) → H₃PO₄(aq) + NaCl(aq)
• C) 2 H₂O(l) → H₃O⁺ (aq) + OH- (aq)
• D) Mg(OH)2(s) → Mg²⁺ (aq) + 2 OH^- (aq)
• E) CO(g) + H₂O(g) → CO₂(g) + H₂(g)

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